﻿/* ***** BEGIN LICENSE BLOCK *****
 *   Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Меню форума Vingrad.
 *
 * The Initial Developer of the Original Code is
 * Jefim Borissov.
 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor (s):
 * Daniel Abramov
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * 
 * ***** END LICENSE BLOCK ***** */
        
 // Помощник по XML
 var xmlhelper = {
    // синхронная загрузка XML
    load: function (url) {  
        try {
            var xmlReq = new XMLHttpRequest ();
            xmlReq.open ('GET', url, false);
            xmlReq.setRequestHeader("Cache-Control", "no-cache");
            xmlReq.setRequestHeader("Pragma", "no-cache");   
            xmlReq.onerror = function () {
                return null;    
            };
            xmlReq.send (null);    
            return xmlReq.responseXML; 
        } catch (e) { return null; }
    },
    // асинхронная загрузка XML
    loadAsync: function (url, onComplete, onError) {
        var xmlReq = new XMLHttpRequest ();
        try {
            xmlReq.open ('GET', url, true);   
            xmlReq.setRequestHeader("Cache-Control", "no-cache");
            xmlReq.setRequestHeader("Pragma", "no-cache");   
            xmlReq.onerror = onError;
            xmlReq.onreadystatechange = function () {
                try {
                    if (xmlReq.readyState == 4) {
                        if (xmlReq.status == 200) {
                            if (xmlReq.responseText != null) {
                                onComplete (xmlReq.responseXML);
                            } else { onError (xmlReq); }
                        } else { onError (xmlReq); }
                    }
                } catch (e) { onError (xmlReq); }    	
            };
            xmlReq.send (null);    
            return xmlReq.responseXML; 
        } catch (e) { onError (xmlReq); }
    },
    // XSL-трансформа
    transform: function(xml, xsl) {  
        var proc = new XSLTProcessor();
        proc.importStylesheet(xsl);     
        return proc.transformToFragment(xml, document);
    },
    save: function (xml, file) {
        var stream = utils.getFileStream ();
        stream.init (file, 0x02 | 0x08 | 0x20, 0664, 0); // запись, создание, обрезание (гы, truncate)
        var serializer = new XMLSerializer ();
        serializer.serializeToStream (xml, stream, "");
        stream.close ();
    }
 }
